TCustomDataSetAdapterField Class

TCustomDataSetAdapterField is the common base class for adapter field objects that represent a dataset field of a type whose value can be displayed as a simple text element.

Class Hierarchy

Pascal

TCustomDataSetAdapterField = class(TBaseDataSetAdapterInputField, IWebGetFieldPrevValue, IGetAdapterValuesList, ICheckOrigValue);

C++

class TCustomDataSetAdapterField : public TBaseDataSetAdapterInputField, public IWebGetFieldPrevValue, public IGetAdapterValuesList, public ICheckOrigValue;

File

DBAdapt

Description

TCustomDataSetAdapterField is the base class for adapter field objects that represent database fields of simple types that can appear in single-line edit controls. This is in contrast, for example, to TDataSetAdapterMemoField, which typically is displayed in a multiline edit control. Because TCustomDataSetAdapterField descendants have values that can be displayed simply, this class adds support for maintaining a list of possible values from which users can choose. If you provide such a list, HTML forms that include this field typically use a selection control such as a list box.

TCustomDataSetAdapterField descendants are included as the fields of a dataset adapter (TDataSetAdapter). Each TCustomDataSetAdapterField descendant represents a single field from a database table, and enables server-side script to refer to or update that field's value.

Do not use TCustomDataSetAdapterField directly. It is intended only as a base class. Instead, use a TCustomDataSetAdapterField descendant such as TDataSetAdapterField.